Tag: microbes in human welfare

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Questions Related to microbes in human welfare

Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

 Identify the blank spaces A, B, C and D in the following table and select the correct answer. 

Type of microbe Scientific name Commercial product
Bacterium A Streptokinase
B Aspergillus niger Citric acid
Fungus Trichoderma polysporum C
Bacterium D Butyric acid

  1. A-Streptococcus, B-Fungus, C-Cyclosporin A, D-Clostridium butylicum

  2. A-Clostridium butylicum, B-Streptococcus, C-Fungus, D-Cyclosporin A

  3. A-Streptococcus, B-Yeast, C-Cydosporin A, Dlactobacillus

  4. A-Streptococcus, B-Cyclosporin A, C-Statins, D-Clostridium butylicum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Strepokinase is obtained from Streptococcus.
Aspergillus is a fungus.
Tricoderma produces cyclosporin A
Butyric acid is obtained from Clostridium butylicum.
So, the correct answer is ' A-Streptococcus, B-Fungus, c-Cyclosporin A, D- Clostridium butylicum.'
Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Match different organisms in column I with their uses in column II and select the correct answer from the given codes.

Column I Column II
A. Lactobacillus acidophifus (i) Formation of dough
B. Saccharomyces cerevisiae (ii) Single cell proteins
C. Propionibacterium shannanii (iii) Conversion of milk into curd
D. Spirulina (iv) Formation of Swiss cheese 
  1. $A-(iii), B-(i), C-(ii), D-(iv) $
  2. $A-(iii), B-(i), C-(iv), D-(ii) $
  3. $A-(i), B-(iii), C-(iv), D-(ii)$
  4. $A-(i), B-(iii), C-(ii), D-(iv) $
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Lactobacillus acidophilus convert milk into curd.
Swiss cheese is made with the help of Propionibacterium shermanii .
Saccharomyces cerevisiae helps in the formation of dough.
Spirulina is used as Singla cell protein.
So, the correct option is 'A-(iii), B-(I), C-(iv), D-(ii)'
Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Select the correct option to fill up the blanks.
(i) _______ are used in detergent formulations and are helpful in removing oily stains from the laundry.
(ii) _______ are ripened by growing Penicillium roqueforti on them.
(iii) ______ are produced without distillation whereas,   are produced by distillation of the fermented broth.
(iv) ______ antibiotic was used to treat American soldiers wounded in world war II.
(v) _______ is also called as kusht rog. 

  1. (i) Lipases, (ii) Camembert cheese, (iii) Whisky and rum, wine and beer, (iv) Penicillin, (v) Leprosy

  2. (I) Lipases, (ii) Roquefort cheese, (iii) Wine and beer, whisky and rum, (iv) Penicillin, (v) Leprosy

  3. (i) Streptokinases, (ii) Roquefort cheese, (iii) Wine and beer, whisky and rum, (iv) Streptomycin, (v) Whooping cough

  4. (i) Amylases, (ii) Swiss cheese, (iii) Whisky and rum, wine and beer, (iv) Penicillin, (v) Diphtheria
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Lipases are used in detergent formulations and are helpful in removing oily stains from the laundry. Roquefort  are ripened by growing Penicillium roqueforti on them. Wine and beer are produced without distillation whereas, whisky and rum  are produced by distillation of the fermented broth.  Penicillin antibiotic was used to treat American soldiers wounded in world war II.  Leprosy is also called as kusht rog. 
So, the correct option is '(i) lipases, (ii)Roquefort cheese, (iii)Wine and beer, whisky and rum, (iv) Penicillin, (v)Leprosy'
Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Microorganisms involved in curd formation is

  1. Rhizopus

  2. Lactobacillus

  3. Smut

  4. Rust
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lactobacillus belongs to the group of bacteria which perform fermentation and convert the sugars into lactic acid in the absence of oxygen. This bacterium is present in the raw milk. This bacterium can also be added to the milk in the form of already synthesized curd. Lactose is the disaccharide sugar present in the milk gets converted to lactic acid. The lactic acid which is produced gives a sour taste and the milk is converted to curd. 

Thus, the correct answer is option B. 

Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

The heat treatment that destroys harmful bacteria and also causes little nutrient damage is

  1. freeze drying

  2. pasteurisation

  3. drying

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is one of the examples of physical methods to cause food preservation and is called pasteurization.

Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Smack is chemically?

  1. Diacetyl morphine

  2. Diethyl morphine

  3. Ethyl alcohol
  4. $3-4$ Diacetylmorphine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Smack is one of the street names of heroin which is chemically diacetylmorphine. It is generally produced by the acetylation of crude morphine and is a narcotic analgesic that is used in the treatment of severe pain. Illicit heroin may be smoked or solubilised with a weak acid and then injected.

So, the correct answer is 'Diacetylmorphine'.
Multiple choice zoology microbes in human welfare biogas environmental use of microorganism microbes in waste treatment and biogas

What would happen if oxygen availability to activated sludge flocs is reduced ?

  1. It will slow down the rate of degradation of organic matter.

  2. The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.

  3. Flea would Increase in size as anaerobic bacteria would grow around flocs.

  4. Protozoa would grow in large numbers.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oxygen is very important for the microorganism to break down and degrade the organic matter which is present in the sewage or the activated sludge. If the oxygen availability of the activated sludge floc is reduced then the degradation rate will slow down.

So, the correct option is 'it will slow down the rate of degradation of organic matter'

Multiple choice zoology microbes in human welfare biogas environmental use of microorganism microbes in waste treatment and biogas

A sewage treatment process in which a part of decomposer bacteria present in the wastes is recycled into the starting of the process is called as:

  1. primary treatment

  2. activated sludge treatment

  3. tertiary treatment

  4. none of these.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A sewage treatment process in which a part of decomposer bacteria present in the wastes is recycled into the starting of the process is called activated sludge treatment .
So, the correct option is 'activated sludge treatment'
Multiple choice zoology microbes in human welfare biogas environmental use of microorganism microbes in waste treatment and biogas

Sewage treatment process in which part of decomposer bacteria is recycled into starting of the process is called.

  1. Cyclic treatment

  2. Primary treatment

  3. Tertiary treatment

  4. Activated sludge treatment
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A part of the activated sludge is pumped back into the aeration tank to serve as an inoculum in activated sludge treatment.

Correct answer-D

Multiple choice zoology microbes in human welfare biogas environmental use of microorganism microbes in waste treatment and biogas

Polluted water can be purified by using

  1. Micro-organisms

  2. Algae

  3. Pesticides

  4. Fishes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water pollution due to organic sources like pollution due to sewage can be prevented by treating sewage before passing into the water course, in sewage or effluent treatment plants (ETP). Domestic sewage primarily contains biodegradable organic matter, which readily decomposes by bacteria and other micro-organisms, which can multiply by using these organic substances as substrates and hence reduce some of the components of sewage. Thus, the correct answer is option A.